//// Copyright (C) 2004-2022 Artifex Software, Inc.
////
//// This file is part of MuPDF.
////
//// MuPDF is free software: you can redistribute it and/or modify it under the
//// terms of the GNU Affero General Public License as published by the Free
//// Software Foundation, either version 3 of the License, or (at your option)
//// any later version.
////
//// MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
//// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
//// FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
//// details.
////
//// You should have received a copy of the GNU Affero General Public License
//// along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
////
//// Alternative licensing terms are available from the licensor.
//// For commercial licensing, see <https://www.artifex.com/> or contact
//// Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
//// CA 94129, USA, for further information.
//
//#include "mupdf/fitz.h"
//
//#include <string.h>
//#include <float.h>
//#include <math.h>
//
//typedef struct
//{
//	int pattern;
//	fz_matrix ctm;
//	fz_rect view;
//	fz_rect area;
//	fz_point step;
//} tile;
//
//typedef struct
//{
//	int id;
//	fz_font *font;
//	int max_sentlist;
//	char *sentlist;
//} font;
//
//typedef struct
//{
//	int id;
//	fz_image *image;
//} image;
//
//typedef struct
//{
//	fz_device super;
//
//	int text_as_text;
//	int reuse_images;
//
//	fz_output *real_out;
//	int in_defs;
//	fz_buffer *defs;
//	fz_buffer *main;
//	fz_buffer *out;
//
//	int *save_id;
//	int id;
//
//	int blend_bitmask;
//
//	int num_tiles;
//	int max_tiles;
//	tile *tiles;
//
//	int num_fonts;
//	int max_fonts;
//	font *fonts;
//
//	int num_images;
//	int max_images;
//	image *images;
//
//	int layers;
//
//	float page_width;
//	float page_height;
//} svg_device;
//
//static fz_buffer *
//start_def(fz_context *ctx, svg_device *sdev, int need_tag)
//{
//	if (sdev->in_defs > 0)
//	{
//		if (need_tag)
//			fz_append_string(ctx, sdev->defs, "<defs>\n");
//	}
//	else
//	{
//		sdev->out = sdev->defs;
//	}
//	sdev->in_defs++;
//	return sdev->out;
//}
//
//static fz_buffer *
//end_def(fz_context *ctx, svg_device *sdev, int need_tag)
//{
//	sdev->in_defs--;
//	if (sdev->in_defs > 0)
//	{
//		if (need_tag)
//			fz_append_string(ctx, sdev->defs, "</defs>\n");
//	}
//	else
//	{
//		sdev->out = sdev->main;
//	}
//	return sdev->out;
//}
//
///* Helper functions */
//
//struct svg_path_walker_state {
//	fz_buffer *out;
//	int space; // needs space
//	float x, y; // last location
//	int cmd; // last command
//};
//
//static void
//svg_path_emit_number(fz_context *ctx, struct svg_path_walker_state *pws, float a)
//{
//	if (pws->space && a >= 0)
//		fz_append_byte(ctx, pws->out, ' ');
//	fz_append_printf(ctx, pws->out, "%g", a);
//	pws->space = 1;
//}
//
//static void
//svg_path_emit_command(fz_context *ctx, struct svg_path_walker_state *pws, char cmd)
//{
//	if (pws->cmd != cmd) {
//		fz_append_byte(ctx, pws->out, cmd);
//		pws->space = 0;
//		pws->cmd = cmd;
//	}
//}
//
//static void
//svg_path_moveto(fz_context *ctx, void *arg, float x, float y)
//{
//	struct svg_path_walker_state *pws = arg;
//	svg_path_emit_command(ctx, pws, 'M');
//	svg_path_emit_number(ctx, pws, x);
//	svg_path_emit_number(ctx, pws, y);
//	pws->cmd = 'L';
//	pws->x = x;
//	pws->y = y;
//}
//
//static void
//svg_path_lineto(fz_context *ctx, void *arg, float x, float y)
//{
//	struct svg_path_walker_state *pws = arg;
//	if (pws->x == x) {
//		svg_path_emit_command(ctx, pws, 'V');
//		svg_path_emit_number(ctx, pws, y);
//	} else if (pws->y == y) {
//		svg_path_emit_command(ctx, pws, 'H');
//		svg_path_emit_number(ctx, pws, x);
//	} else {
//		svg_path_emit_command(ctx, pws, 'L');
//		svg_path_emit_number(ctx, pws, x);
//		svg_path_emit_number(ctx, pws, y);
//	}
//	pws->x = x;
//	pws->y = y;
//}
//
//static void
//svg_path_curveto(fz_context *ctx, void *arg, float x1, float y1, float x2, float y2, float x3, float y3)
//{
//	struct svg_path_walker_state *pws = arg;
//	svg_path_emit_command(ctx, pws, 'C');
//	svg_path_emit_number(ctx, pws, x1);
//	svg_path_emit_number(ctx, pws, y1);
//	svg_path_emit_number(ctx, pws, x2);
//	svg_path_emit_number(ctx, pws, y2);
//	svg_path_emit_number(ctx, pws, x3);
//	svg_path_emit_number(ctx, pws, y3);
//	pws->x = x3;
//	pws->y = y3;
//}
//
//static void
//svg_path_close(fz_context *ctx, void *arg)
//{
//	struct svg_path_walker_state *pws = arg;
//	svg_path_emit_command(ctx, arg, 'Z');
//	pws->x = NAN;
//	pws->y = NAN;
//}
//
//static const fz_path_walker svg_path_walker =
//{
//	svg_path_moveto,
//	svg_path_lineto,
//	svg_path_curveto,
//	svg_path_close
//};
//
//static void
//svg_dev_path(fz_context *ctx, svg_device *sdev, const fz_path *path)
//{
//	struct svg_path_walker_state pws = { sdev->out, 0, NAN, NAN, 0 };
//	fz_append_printf(ctx, sdev->out, " d=\"");
//	fz_walk_path(ctx, path, &svg_path_walker, &pws);
//	fz_append_printf(ctx, sdev->out, "\"");
//}
//
//static void
//svg_dev_ctm(fz_context *ctx, svg_device *sdev, fz_matrix ctm)
//{
//	fz_buffer *out = sdev->out;
//
//	if (ctm.a != 1.0f || ctm.b != 0 || ctm.c != 0 || ctm.d != 1.0f || ctm.e != 0 || ctm.f != 0)
//	{
//		fz_append_printf(ctx, out, " transform=\"matrix(%g,%g,%g,%g,%g,%g)\"",
//			ctm.a, ctm.b, ctm.c, ctm.d, ctm.e, ctm.f);
//	}
//}
//
//static void
//svg_dev_stroke_state(fz_context *ctx, svg_device *sdev, const fz_stroke_state *stroke_state, fz_matrix ctm)
//{
//	fz_buffer *out = sdev->out;
//	float exp;
//
//	exp = fz_matrix_expansion(ctm);
//	if (exp == 0)
//		exp = 1;
//	exp = stroke_state->linewidth/exp;
//
//	fz_append_printf(ctx, out, " stroke-width=\"%g\"", exp);
//	fz_append_printf(ctx, out, " stroke-linecap=\"%s\"",
//		(stroke_state->start_cap == FZ_LINECAP_SQUARE ? "square" :
//			(stroke_state->start_cap == FZ_LINECAP_ROUND ? "round" : "butt")));
//	if (stroke_state->dash_len != 0)
//	{
//		int i;
//		fz_append_printf(ctx, out, " stroke-dasharray=");
//		for (i = 0; i < stroke_state->dash_len; i++)
//			fz_append_printf(ctx, out, "%c%g", (i == 0 ? '\"' : ','), stroke_state->dash_list[i]);
//		fz_append_printf(ctx, out, "\"");
//		if (stroke_state->dash_phase != 0)
//			fz_append_printf(ctx, out, " stroke-dashoffset=\"%g\"", stroke_state->dash_phase);
//	}
//	if (stroke_state->linejoin == FZ_LINEJOIN_MITER || stroke_state->linejoin == FZ_LINEJOIN_MITER_XPS)
//		fz_append_printf(ctx, out, " stroke-miterlimit=\"%g\"", stroke_state->miterlimit);
//	fz_append_printf(ctx, out, " stroke-linejoin=\"%s\"",
//		(stroke_state->linejoin == FZ_LINEJOIN_BEVEL ? "bevel" :
//			(stroke_state->linejoin == FZ_LINEJOIN_ROUND ? "round" : "miter")));
//}
//
//static unsigned int
//svg_hex_color(fz_context *ctx, fz_colorspace *colorspace, const float *color, fz_color_params color_params)
//{
//	float rgb[3];
//	int r, g, b;
//
//	if (colorspace != fz_device_rgb(ctx))
//	{
//		fz_convert_color(ctx, colorspace, color, fz_device_rgb(ctx), rgb, NULL, color_params);
//		color = rgb;
//	}
//
//	r = fz_clampi(255 * color[0] + 0.5f, 0, 255);
//	g = fz_clampi(255 * color[1] + 0.5f, 0, 255);
//	b = fz_clampi(255 * color[2] + 0.5f, 0, 255);
//
//	return (r << 16) | (g << 8) | b;
//}
//
//static void
//svg_dev_fill_color(fz_context *ctx, svg_device *sdev, fz_colorspace *colorspace, const float *color, float alpha, fz_color_params color_params)
//{
//	fz_buffer *out = sdev->out;
//	if (colorspace)
//	{
//		int rgb = svg_hex_color(ctx, colorspace, color, color_params);
//		if (rgb != 0) /* black is the default value */
//			fz_append_printf(ctx, out, " fill=\"#%06x\"", rgb);
//	}
//	else
//		fz_append_printf(ctx, out, " fill=\"none\"");
//	if (alpha != 1)
//		fz_append_printf(ctx, out, " fill-opacity=\"%g\"", alpha);
//}
//
//static void
//svg_dev_stroke_color(fz_context *ctx, svg_device *sdev, fz_colorspace *colorspace, const float *color, float alpha, fz_color_params color_params)
//{
//	fz_buffer *out = sdev->out;
//	if (colorspace)
//		fz_append_printf(ctx, out, " fill=\"none\" stroke=\"#%06x\"", svg_hex_color(ctx, colorspace, color, color_params));
//	else
//		fz_append_printf(ctx, out, " fill=\"none\" stroke=\"none\"");
//	if (alpha != 1)
//		fz_append_printf(ctx, out, " stroke-opacity=\"%g\"", alpha);
//}
//
//static void
//svg_font_family(fz_context *ctx, char buf[], int size, const char *name)
//{
//	/* Remove "ABCDEF+" prefix and "-Bold" suffix. */
//	char *p = strchr(name, '+');
//	if (p) fz_strlcpy(buf, p+1, size);
//	else fz_strlcpy(buf, name, size);
//	p = strrchr(buf, '-');
//	if (p) *p = 0;
//}
//
//static int
//find_first_char(fz_context *ctx, const fz_text_span *span, int i)
//{
//	for (; i < span->len; ++i)
//		if (span->items[i].ucs >= 0)
//			return i;
//	return i;
//}
//
//static int
//find_next_line_break(fz_context *ctx, const fz_text_span *span, fz_matrix inv_tm, int i)
//{
//	fz_point p, old_p;
//
//	old_p.x = span->items[i].x;
//	old_p.y = span->items[i].y;
//	old_p = fz_transform_point(old_p, inv_tm);
//
//	for (++i; i < span->len; ++i)
//	{
//		if (span->items[i].ucs >= 0)
//		{
//			p.x = span->items[i].x;
//			p.y = span->items[i].y;
//			p = fz_transform_point(p, inv_tm);
//			if (span->wmode == 0)
//			{
//				if (p.y != old_p.y)
//					return i;
//			}
//			else
//			{
//				if (p.x != old_p.x)
//					return i;
//			}
//			old_p = p;
//		}
//	}
//
//	return i;
//}
//
//static float
//svg_cluster_advance(fz_context *ctx, const fz_text_span *span, int i, int end)
//{
//	int n = 1;
//	while (i + n < end && span->items[i + n].gid == -1)
//		++n;
//	if (n > 1)
//		return fz_advance_glyph(ctx, span->font, span->items[i].gid, span->wmode) / n;
//	return 0; /* this value is never used (since n==1) */
//}
//
//static void
//svg_dev_text_span(fz_context *ctx, svg_device *sdev, fz_matrix ctm, const fz_text_span *span)
//{
//	fz_buffer *out = sdev->out;
//	char font_family[100];
//	int is_bold, is_italic;
//	fz_matrix tm, inv_tm, final_tm;
//	fz_point p;
//	float font_size;
//	fz_text_item *it;
//	int start, end, i;
//	float cluster_advance = 0;
//
//	if (span->len == 0)
//	{
//		fz_append_printf(ctx, out, "/>\n");
//		return;
//	}
//
//	tm = span->trm;
//	font_size = fz_matrix_expansion(tm);
//	final_tm.a = tm.a / font_size;
//	final_tm.b = tm.b / font_size;
//	final_tm.c = -tm.c / font_size;
//	final_tm.d = -tm.d / font_size;
//	final_tm.e = 0;
//	final_tm.f = 0;
//	inv_tm = fz_invert_matrix(final_tm);
//	final_tm = fz_concat(final_tm, ctm);
//
//	tm.e = span->items[0].x;
//	tm.f = span->items[0].y;
//
//	svg_font_family(ctx, font_family, sizeof font_family, fz_font_name(ctx, span->font));
//	is_bold = fz_font_is_bold(ctx, span->font);
//	is_italic = fz_font_is_italic(ctx, span->font);
//
//	fz_append_printf(ctx, out, " xml:space=\"preserve\"");
//	fz_append_printf(ctx, out, " transform=\"matrix(%M)\"", &final_tm);
//	fz_append_printf(ctx, out, " font-size=\"%g\"", font_size);
//	fz_append_printf(ctx, out, " font-family=\"%s\"", font_family);
//	if (is_bold) fz_append_printf(ctx, out, " font-weight=\"bold\"");
//	if (is_italic) fz_append_printf(ctx, out, " font-style=\"italic\"");
//	if (span->wmode != 0) fz_append_printf(ctx, out, " writing-mode=\"tb\"");
//
//	fz_append_byte(ctx, out, '>');
//
//	start = find_first_char(ctx, span, 0);
//	while (start < span->len)
//	{
//		end = find_next_line_break(ctx, span, inv_tm, start);
//
//		p.x = span->items[start].x;
//		p.y = span->items[start].y;
//		p = fz_transform_point(p, inv_tm);
//		if (span->items[start].gid >= 0)
//			cluster_advance = svg_cluster_advance(ctx, span, start, end);
//		if (span->wmode == 0)
//			fz_append_printf(ctx, out, "<tspan y=\"%g\" x=\"%g", p.y, p.x);
//		else
//			fz_append_printf(ctx, out, "<tspan x=\"%g\" y=\"%g", p.x, p.y);
//		for (i = start + 1; i < end; ++i)
//		{
//			it = &span->items[i];
//			if (it->gid >= 0)
//				cluster_advance = svg_cluster_advance(ctx, span, i, end);
//			if (it->ucs >= 0)
//			{
//				if (it->gid >= 0)
//				{
//					p.x = it->x;
//					p.y = it->y;
//					p = fz_transform_point(p, inv_tm);
//				}
//				else
//				{
//					/* we have no glyph (such as in a ligature) -- advance a bit */
//					if (span->wmode == 0)
//						p.x += font_size * cluster_advance;
//					else
//						p.y += font_size * cluster_advance;
//				}
//				fz_append_printf(ctx, out, " %g", span->wmode == 0 ? p.x : p.y);
//			}
//		}
//		fz_append_printf(ctx, out, "\">");
//		for (i = start; i < end; ++i)
//		{
//			it = &span->items[i];
//			if (it->ucs >= 0)
//			{
//				int c = it->ucs;
//				if (c >= 32 && c <= 127 && c != '<' && c != '&' && c != '>')
//					fz_append_byte(ctx, out, c);
//				else
//					fz_append_printf(ctx, out, "&#x%04x;", c);
//			}
//		}
//		fz_append_printf(ctx, out, "</tspan>");
//
//		start = find_first_char(ctx, span, end);
//	}
//
//	fz_append_printf(ctx, out, "</text>\n");
//}
//
//static font *
//svg_dev_text_span_as_paths_defs(fz_context *ctx, fz_device *dev, fz_text_span *span, fz_matrix ctm)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//	int i, font_idx;
//	font *fnt;
//
//	for (font_idx = 0; font_idx < sdev->num_fonts; font_idx++)
//	{
//		if (sdev->fonts[font_idx].font == span->font)
//			break;
//	}
//	if (font_idx == sdev->num_fonts)
//	{
//		/* New font */
//		if (font_idx == sdev->max_fonts)
//		{
//			int newmax = sdev->max_fonts * 2;
//			if (newmax == 0)
//				newmax = 4;
//			sdev->fonts = fz_realloc_array(ctx, sdev->fonts, newmax, font);
//			memset(&sdev->fonts[font_idx], 0, (newmax - font_idx) * sizeof(font));
//			sdev->max_fonts = newmax;
//		}
//		sdev->fonts[font_idx].id = sdev->id++;
//		sdev->fonts[font_idx].font = fz_keep_font(ctx, span->font);
//		sdev->num_fonts++;
//	}
//	fnt = &sdev->fonts[font_idx];
//
//	for (i=0; i < span->len; i++)
//	{
//		fz_text_item *it = &span->items[i];
//		int gid = it->gid;
//
//		if (gid < 0)
//			continue;
//		if (gid >= fnt->max_sentlist)
//		{
//			int j;
//			fnt->sentlist = fz_realloc_array(ctx, fnt->sentlist, gid+1, char);
//			for (j = fnt->max_sentlist; j <= gid; j++)
//				fnt->sentlist[j] = 0;
//			fnt->max_sentlist = gid+1;
//		}
//		if (!fnt->sentlist[gid])
//		{
//			/* Need to send this one */
//			fz_path *path;
//			out = start_def(ctx, sdev, 1);
//			if (fz_font_ft_face(ctx, span->font))
//			{
//				path = fz_outline_glyph(ctx, span->font, gid, fz_identity);
//				if (path)
//				{
//					fz_append_printf(ctx, out, "<path id=\"font_%d_%d\"", fnt->id, gid);
//					svg_dev_path(ctx, sdev, path);
//					fz_append_printf(ctx, out, "/>\n");
//					fz_drop_path(ctx, path);
//				}
//				else
//				{
//					fz_append_printf(ctx, out, "<g id=\"font_%d_%d\"></g>\n", fnt->id, gid);
//				}
//			}
//			else if (fz_font_t3_procs(ctx, span->font))
//			{
//				fz_append_printf(ctx, out, "<g id=\"font_%d_%d\">\n", fnt->id, gid);
//				fz_run_t3_glyph(ctx, span->font, gid, fz_identity, dev);
//				fnt = &sdev->fonts[font_idx]; /* recursion may realloc the font array! */
//				fz_append_printf(ctx, out, "</g>\n");
//			}
//			out = end_def(ctx, sdev, 1);
//			fnt->sentlist[gid] = 1;
//		}
//	}
//	return fnt;
//}
//
//static void
//svg_dev_data_text(fz_context *ctx, fz_buffer *out, int c)
//{
//	if (c > 0)
//	{
//		fz_append_string(ctx, out, " data-text=\"");
//		if (c == '&')
//			fz_append_string(ctx, out, "&amp;");
//		else if (c == '"')
//			fz_append_string(ctx, out, "&quot;");
//		else if (c >= 32 && c < 127 && c != '<' && c != '>')
//			fz_append_byte(ctx, out, c);
//		else if (c >= 0xD800 && c <= 0xDFFF)
//			/* no surrogate characters in SVG */
//			fz_append_printf(ctx, out, "&#xFFFD;");
//		else
//			fz_append_printf(ctx, out, "&#x%04x;", c);
//		fz_append_byte(ctx, out, '"');
//	}
//}
//
//static void
//svg_dev_text_span_as_paths_fill(fz_context *ctx, fz_device *dev, const fz_text_span *span, fz_matrix ctm,
//	fz_colorspace *colorspace, const float *color, float alpha, font *fnt, fz_color_params color_params)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//	fz_matrix trm, mtx;
//	int i;
//
//	/* Rely on the fact that trm.{e,f} == 0 */
//	trm.a = span->trm.a;
//	trm.b = span->trm.b;
//	trm.c = span->trm.c;
//	trm.d = span->trm.d;
//	trm.e = 0;
//	trm.f = 0;
//
//	for (i=0; i < span->len; i++)
//	{
//		fz_text_item *it = &span->items[i];
//		int gid = it->gid;
//		if (gid < 0)
//			continue;
//
//		trm.e = it->x;
//		trm.f = it->y;
//		mtx = fz_concat(trm, ctm);
//
//		fz_append_string(ctx, out, "<use");
//		svg_dev_data_text(ctx, out, it->ucs);
//		fz_append_printf(ctx, out, " xlink:href=\"#font_%d_%d\"", fnt->id, gid);
//		svg_dev_ctm(ctx, sdev, mtx);
//		svg_dev_fill_color(ctx, sdev, colorspace, color, alpha, color_params);
//		fz_append_printf(ctx, out, "/>\n");
//	}
//}
//
//static void
//svg_dev_text_span_as_paths_stroke(fz_context *ctx, fz_device *dev, const fz_text_span *span,
//	const fz_stroke_state *stroke, fz_matrix ctm,
//	fz_colorspace *colorspace, const float *color, float alpha, font *fnt, fz_color_params color_params)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//	fz_matrix trm, mtx;
//	int i;
//
//	/* Rely on the fact that trm.{e,f} == 0 */
//	trm.a = span->trm.a;
//	trm.b = span->trm.b;
//	trm.c = span->trm.c;
//	trm.d = span->trm.d;
//	trm.e = 0;
//	trm.f = 0;
//
//	for (i=0; i < span->len; i++)
//	{
//		fz_text_item *it = &span->items[i];
//		int gid = it->gid;
//		if (gid < 0)
//			continue;
//
//		trm.e = it->x;
//		trm.f = it->y;
//		mtx = fz_concat(trm, ctm);
//
//		fz_append_string(ctx, out, "<use");
//		svg_dev_data_text(ctx, out, it->ucs);
//		fz_append_printf(ctx, out, " xlink:href=\"#font_%d_%d\"", fnt->id, gid);
//		svg_dev_stroke_state(ctx, sdev, stroke, mtx);
//		svg_dev_ctm(ctx, sdev, mtx);
//		svg_dev_stroke_color(ctx, sdev, colorspace, color, alpha, color_params);
//		fz_append_printf(ctx, out, "/>\n");
//	}
//}
//
///* Entry points */
//
//static void
//svg_dev_fill_path(fz_context *ctx, fz_device *dev, const fz_path *path, int even_odd, fz_matrix ctm,
//	fz_colorspace *colorspace, const float *color, float alpha, fz_color_params color_params)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//
//	fz_append_printf(ctx, out, "<path");
//	svg_dev_ctm(ctx, sdev, ctm);
//	svg_dev_path(ctx, sdev, path);
//	svg_dev_fill_color(ctx, sdev, colorspace, color, alpha, color_params);
//	if (even_odd)
//		fz_append_printf(ctx, out, " fill-rule=\"evenodd\"");
//	fz_append_printf(ctx, out, "/>\n");
//}
//
//static void
//svg_dev_stroke_path(fz_context *ctx, fz_device *dev, const fz_path *path, const fz_stroke_state *stroke, fz_matrix ctm,
//	fz_colorspace *colorspace, const float *color, float alpha, fz_color_params color_params)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//
//	fz_append_printf(ctx, out, "<path");
//	svg_dev_ctm(ctx, sdev, ctm);
//	svg_dev_stroke_state(ctx, sdev, stroke, fz_identity);
//	svg_dev_stroke_color(ctx, sdev, colorspace, color, alpha, color_params);
//	svg_dev_path(ctx, sdev, path);
//	fz_append_printf(ctx, out, "/>\n");
//}
//
//static void
//svg_dev_clip_path(fz_context *ctx, fz_device *dev, const fz_path *path, int even_odd, fz_matrix ctm, fz_rect scissor)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out;
//
//	int num = sdev->id++;
//
//	out = start_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<clipPath id=\"clip_%d\">\n", num);
//	fz_append_printf(ctx, out, "<path");
//	svg_dev_ctm(ctx, sdev, ctm);
//	svg_dev_path(ctx, sdev, path);
//	if (even_odd)
//		fz_append_printf(ctx, out, " clip-rule=\"evenodd\"");
//	fz_append_printf(ctx, out, "/>\n</clipPath>\n");
//	out = end_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<g clip-path=\"url(#clip_%d)\">\n", num);
//}
//
//static void
//svg_dev_clip_stroke_path(fz_context *ctx, fz_device *dev, const fz_path *path, const fz_stroke_state *stroke, fz_matrix ctm, fz_rect scissor)
//{
//	svg_device *sdev = (svg_device*)dev;
//
//	fz_buffer *out;
//	fz_rect bounds;
//	int num = sdev->id++;
//	float white[3] = { 1, 1, 1 };
//
//	bounds = fz_bound_path(ctx, path, stroke, ctm);
//
//	out = start_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<mask id=\"mask_%d\" x=\"%g\" y=\"%g\" width=\"%g\" height=\"%g\" maskUnits=\"userSpaceOnUse\" maskContentUnits=\"userSpaceOnUse\">\n",
//		num, bounds.x0, bounds.y0, bounds.x1 - bounds.x0, bounds.y1 - bounds.y0);
//	fz_append_printf(ctx, out, "<path");
//	svg_dev_ctm(ctx, sdev, ctm);
//	svg_dev_stroke_state(ctx, sdev, stroke, fz_identity);
//	svg_dev_stroke_color(ctx, sdev, fz_device_rgb(ctx), white, 1, fz_default_color_params);
//	svg_dev_path(ctx, sdev, path);
//	fz_append_printf(ctx, out, "/>\n</mask>\n");
//	out = end_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<g mask=\"url(#mask_%d)\">\n", num);
//}
//
//static void
//svg_dev_fill_text(fz_context *ctx, fz_device *dev, const fz_text *text, fz_matrix ctm,
//	fz_colorspace *colorspace, const float *color, float alpha, fz_color_params color_params)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//	font *fnt;
//	fz_text_span *span;
//
//	if (sdev->text_as_text)
//	{
//		for (span = text->head; span; span = span->next)
//		{
//			fz_append_printf(ctx, out, "<text");
//			svg_dev_fill_color(ctx, sdev, colorspace, color, alpha, color_params);
//			svg_dev_text_span(ctx, sdev, ctm, span);
//		}
//	}
//	else
//	{
//		for (span = text->head; span; span = span->next)
//		{
//			fnt = svg_dev_text_span_as_paths_defs(ctx, dev, span, ctm);
//			svg_dev_text_span_as_paths_fill(ctx, dev, span, ctm, colorspace, color, alpha, fnt, color_params);
//		}
//	}
//}
//
//static void
//svg_dev_stroke_text(fz_context *ctx, fz_device *dev, const fz_text *text, const fz_stroke_state *stroke, fz_matrix ctm,
//	fz_colorspace *colorspace, const float *color, float alpha, fz_color_params color_params)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//	font *fnt;
//	fz_text_span *span;
//
//	if (sdev->text_as_text)
//	{
//		for (span = text->head; span; span = span->next)
//		{
//			fz_append_printf(ctx, out, "<text");
//			svg_dev_fill_color(ctx, sdev, colorspace, color, alpha, color_params);
//			svg_dev_text_span(ctx, sdev, ctm, span);
//		}
//	}
//	else
//	{
//		for (span = text->head; span; span = span->next)
//		{
//			fnt = svg_dev_text_span_as_paths_defs(ctx, dev, span, ctm);
//			svg_dev_text_span_as_paths_stroke(ctx, dev, span, stroke, ctm, colorspace, color, alpha, fnt, color_params);
//		}
//	}
//}
//
//static void
//svg_dev_clip_text(fz_context *ctx, fz_device *dev, const fz_text *text, fz_matrix ctm, fz_rect scissor)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//
//	fz_rect bounds;
//	int num = sdev->id++;
//	float white[3] = { 1, 1, 1 };
//	font *fnt;
//	fz_text_span *span;
//
//	bounds = fz_bound_text(ctx, text, NULL, ctm);
//
//	out = start_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<mask id=\"mask_%d\" x=\"%g\" y=\"%g\" width=\"%g\" height=\"%g\"",
//			num, bounds.x0, bounds.y0, bounds.x1 - bounds.x0, bounds.y1 - bounds.y0);
//	fz_append_printf(ctx, out, " maskUnits=\"userSpaceOnUse\" maskContentUnits=\"userSpaceOnUse\">\n");
//	if (sdev->text_as_text)
//	{
//		for (span = text->head; span; span = span->next)
//		{
//			fz_append_printf(ctx, out, "<text");
//			svg_dev_fill_color(ctx, sdev, fz_device_rgb(ctx), white, 1, fz_default_color_params);
//			svg_dev_text_span(ctx, sdev, ctm, span);
//		}
//	}
//	else
//	{
//		for (span = text->head; span; span = span->next)
//		{
//			fnt = svg_dev_text_span_as_paths_defs(ctx, dev, span, ctm);
//			svg_dev_text_span_as_paths_fill(ctx, dev, span, ctm, fz_device_rgb(ctx), white, 1.0f, fnt, fz_default_color_params);
//		}
//	}
//	fz_append_printf(ctx, out, "</mask>\n");
//	out = end_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<g mask=\"url(#mask_%d)\">\n", num);
//}
//
//static void
//svg_dev_clip_stroke_text(fz_context *ctx, fz_device *dev, const fz_text *text, const fz_stroke_state *stroke, fz_matrix ctm, fz_rect scissor)
//{
//	svg_device *sdev = (svg_device*)dev;
//
//	fz_buffer *out;
//	fz_rect bounds;
//	int num = sdev->id++;
//	float white[3] = { 255, 255, 255 };
//	font *fnt;
//	fz_text_span *span;
//
//	bounds = fz_bound_text(ctx, text, NULL, ctm);
//
//	out = start_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<mask id=\"mask_%d\" x=\"%g\" y=\"%g\" width=\"%g\" height=\"%g\"",
//		num, bounds.x0, bounds.y0, bounds.x1 - bounds.x0, bounds.y1 - bounds.y0);
//	fz_append_printf(ctx, out, " maskUnits=\"userSpaceOnUse\" maskContentUnits=\"userSpaceOnUse\">\n");
//	if (sdev->text_as_text)
//	{
//		for (span = text->head; span; span = span->next)
//		{
//			fz_append_printf(ctx, out, "<text");
//			svg_dev_stroke_state(ctx, sdev, stroke, fz_identity);
//			svg_dev_stroke_color(ctx, sdev, fz_device_rgb(ctx), white, 1, fz_default_color_params);
//			svg_dev_text_span(ctx, sdev, ctm, span);
//		}
//	}
//	else
//	{
//		for (span = text->head; span; span = span->next)
//		{
//			fnt = svg_dev_text_span_as_paths_defs(ctx, dev, span, ctm);
//			svg_dev_text_span_as_paths_stroke(ctx, dev, span, stroke, ctm, fz_device_rgb(ctx), white, 1.0f, fnt, fz_default_color_params);
//		}
//	}
//	fz_append_printf(ctx, out, "</mask>\n");
//	out = end_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<g mask=\"url(#mask_%d)\">\n", num);
//}
//
//static void
//svg_dev_ignore_text(fz_context *ctx, fz_device *dev, const fz_text *text, fz_matrix ctm)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//	fz_text_span *span;
//
//	float black[3] = { 0, 0, 0};
//
//	if (sdev->text_as_text)
//	{
//		for (span = text->head; span; span = span->next)
//		{
//			fz_append_printf(ctx, out, "<text");
//			svg_dev_fill_color(ctx, sdev, fz_device_rgb(ctx), black, 0.0f, fz_default_color_params);
//			svg_dev_text_span(ctx, sdev, ctm, span);
//		}
//	}
//}
//
///* We spot repeated images, and send them just once using
// * defs. Unfortunately, for pathological files, such
// * as the example in Bug695988, this can cause viewers to
// * have conniptions. We therefore have an option that is
// * made to avoid this (reuse-images=no). */
//static void
//svg_send_image(fz_context *ctx, svg_device *sdev, fz_image *img, fz_color_params color_params)
//{
//	fz_buffer *out = sdev->out;
//	int i;
//	int id;
//
//	if (sdev->reuse_images)
//	{
//		for (i = sdev->num_images-1; i >= 0; i--)
//			if (img == sdev->images[i].image)
//				break;
//		if (i >= 0)
//		{
//			fz_append_printf(ctx, out, "<use xlink:href=\"#image_%d\" x=\"0\" y=\"0\" width=\"%d\" height=\"%d\"/>\n",
//					sdev->images[i].id, img->w, img->h);
//			return;
//		}
//
//		/* We need to send this image for the first time */
//		if (sdev->num_images == sdev->max_images)
//		{
//			int new_max = sdev->max_images * 2;
//			if (new_max == 0)
//				new_max = 32;
//			sdev->images = fz_realloc_array(ctx, sdev->images, new_max, image);
//			sdev->max_images = new_max;
//		}
//
//		id = sdev->id++;
//
//		fz_append_printf(ctx, out, "<image id=\"image_%d\" width=\"%d\" height=\"%d\" xlink:href=\"", id, img->w, img->h);
//		fz_append_image_as_data_uri(ctx, out, img);
//		fz_append_printf(ctx, out, "\"/>\n");
//
//		sdev->images[sdev->num_images].id = id;
//		sdev->images[sdev->num_images].image = fz_keep_image(ctx, img);
//		sdev->num_images++;
//	}
//	else
//	{
//		fz_append_printf(ctx, out, "<image width=\"%d\" height=\"%d\" xlink:href=\"", img->w, img->h);
//		fz_append_image_as_data_uri(ctx, out, img);
//		fz_append_printf(ctx, out, "\"/>\n");
//	}
//}
//
//static void
//svg_dev_fill_image(fz_context *ctx, fz_device *dev, fz_image *image, fz_matrix ctm, float alpha, fz_color_params color_params)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//
//	fz_matrix local_ctm = ctm;
//	fz_matrix scale = { 0 };
//
//	if (alpha == 0)
//		return;
//
//	scale.a = 1.0f / image->w;
//	scale.d = 1.0f / image->h;
//
//	local_ctm = fz_concat(scale, ctm);
//	fz_append_printf(ctx, out, "<g");
//	if (alpha != 1.0f)
//		fz_append_printf(ctx, out, " opacity=\"%g\"", alpha);
//	svg_dev_ctm(ctx, sdev, local_ctm);
//	fz_append_printf(ctx, out, ">\n");
//	svg_send_image(ctx, sdev, image, color_params);
//	fz_append_printf(ctx, out, "</g>\n");
//}
//
//static void
//svg_dev_fill_shade(fz_context *ctx, fz_device *dev, fz_shade *shade, fz_matrix ctm, float alpha, fz_color_params color_params)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//	fz_irect bbox;
//	fz_pixmap *pix;
//	fz_rect scissor = fz_device_current_scissor(ctx, dev);
//
//	if (alpha == 0)
//		return;
//
//	if (fz_is_infinite_rect(scissor))
//	{
//		scissor.x0 = 0;
//		scissor.x1 = sdev->page_width;
//		scissor.y0 = 0;
//		scissor.y1 = sdev->page_height;
//	}
//
//	bbox = fz_round_rect(fz_intersect_rect(fz_bound_shade(ctx, shade, ctm), scissor));
//	if (fz_is_empty_irect(bbox))
//		return;
//	pix = fz_new_pixmap_with_bbox(ctx, fz_device_rgb(ctx), bbox, NULL, 1);
//	fz_clear_pixmap(ctx, pix);
//
//	fz_try(ctx)
//	{
//		fz_paint_shade(ctx, shade, NULL, ctm, pix, color_params, bbox, NULL, NULL);
//		if (alpha != 1.0f)
//			fz_append_printf(ctx, out, "<g opacity=\"%g\">\n", alpha);
//		fz_append_printf(ctx, out, "<image x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" xlink:href=\"", pix->x, pix->y, pix->w, pix->h);
//		fz_append_pixmap_as_data_uri(ctx, out, pix);
//		fz_append_printf(ctx, out, "\"/>\n");
//		if (alpha != 1.0f)
//			fz_append_printf(ctx, out, "</g>\n");
//	}
//	fz_always(ctx)
//	{
//		fz_drop_pixmap(ctx, pix);
//	}
//	fz_catch(ctx)
//	{
//		fz_rethrow(ctx);
//	}
//}
//
//static void
//svg_dev_fill_image_mask(fz_context *ctx, fz_device *dev, fz_image *image, fz_matrix ctm,
//	fz_colorspace *colorspace, const float *color, float alpha, fz_color_params color_params)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out;
//	fz_matrix local_ctm = ctm;
//	fz_matrix scale = { 0 };
//	int mask = sdev->id++;
//
//	scale.a = 1.0f / image->w;
//	scale.d = 1.0f / image->h;
//
//	local_ctm = fz_concat(scale, ctm);
//	out = start_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<mask id=\"mask_%d\">\n", mask);
//	svg_send_image(ctx, sdev, image, color_params);
//	fz_append_printf(ctx, out, "</mask>\n");
//	out = end_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<rect x=\"0\" y=\"0\" width=\"%d\" height=\"%d\"", image->w, image->h);
//	svg_dev_fill_color(ctx, sdev, colorspace, color, alpha, color_params);
//	svg_dev_ctm(ctx, sdev, local_ctm);
//	fz_append_printf(ctx, out, " mask=\"url(#mask_%d)\"/>\n", mask);
//}
//
//static void
//svg_dev_clip_image_mask(fz_context *ctx, fz_device *dev, fz_image *image, fz_matrix ctm, fz_rect scissor)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out;
//	fz_matrix local_ctm = ctm;
//	fz_matrix scale = { 0 };
//	int mask = sdev->id++;
//
//	scale.a = 1.0f / image->w;
//	scale.d = 1.0f / image->h;
//
//	local_ctm = fz_concat(scale, ctm);
//	out = start_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<mask id=\"mask_%d\">\n<g", mask);
//	svg_dev_ctm(ctx, sdev, local_ctm);
//	fz_append_printf(ctx, out, ">\n");
//	svg_send_image(ctx, sdev, image, fz_default_color_params/* FIXME */);
//	fz_append_printf(ctx, out, "</g>\n</mask>\n");
//	out = end_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<g mask=\"url(#mask_%d)\">\n", mask);
//}
//
//static void
//svg_dev_pop_clip(fz_context *ctx, fz_device *dev)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//
//	/* FIXME */
//	fz_append_printf(ctx, out, "</g>\n");
//}
//
//static void
//svg_dev_begin_mask(fz_context *ctx, fz_device *dev, fz_rect bbox, int luminosity, fz_colorspace *colorspace, const float *color, fz_color_params color_params)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out;
//	int mask = sdev->id++;
//
//	out = start_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<mask id=\"mask_%d\">\n", mask);
//
//	if (dev->container_len > 0)
//		dev->container[dev->container_len-1].user = mask;
//}
//
//static void
//svg_dev_end_mask(fz_context *ctx, fz_device *dev, fz_function *tr)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//	int mask = 0;
//
//	if (dev->container_len > 0)
//		mask = dev->container[dev->container_len-1].user;
//
//	if (tr)
//		fz_warn(ctx, "Ignoring Transfer Function");
//
//	fz_append_printf(ctx, out, "\"/>\n</mask>\n");
//	out = end_def(ctx, sdev, 0);
//	fz_append_printf(ctx, out, "<g mask=\"url(#mask_%d)\">\n", mask);
//}
//
//static void
//svg_dev_begin_group(fz_context *ctx, fz_device *dev, fz_rect bbox, fz_colorspace *cs, int isolated, int knockout, int blendmode, float alpha)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//
//	/* SVG only supports normal/multiply/screen/darken/lighten,
//	 * but we'll send them all, as the spec says that unrecognised
//	 * ones are treated as normal. */
//	static char *blend_names[] = {
//		"normal",	/* FZ_BLEND_NORMAL */
//		"multiply",	/* FZ_BLEND_MULTIPLY */
//		"screen",	/* FZ_BLEND_SCREEN */
//		"overlay",	/* FZ_BLEND_OVERLAY */
//		"darken",	/* FZ_BLEND_DARKEN */
//		"lighten",	/* FZ_BLEND_LIGHTEN */
//		"color-dodge",	/* FZ_BLEND_COLOR_DODGE */
//		"color-burn",	/* FZ_BLEND_COLOR_BURN */
//		"hard-light",	/* FZ_BLEND_HARD_LIGHT */
//		"soft-light",	/* FZ_BLEND_SOFT_LIGHT */
//		"difference",	/* FZ_BLEND_DIFFERENCE */
//		"exclusion",	/* FZ_BLEND_EXCLUSION */
//		"hue",		/* FZ_BLEND_HUE */
//		"saturation",	/* FZ_BLEND_SATURATION */
//		"color",	/* FZ_BLEND_COLOR */
//		"luminosity",	/* FZ_BLEND_LUMINOSITY */
//	};
//
//	if (blendmode < FZ_BLEND_NORMAL || blendmode > FZ_BLEND_LUMINOSITY)
//		blendmode = FZ_BLEND_NORMAL;
//	if (blendmode != FZ_BLEND_NORMAL && (sdev->blend_bitmask & (1<<blendmode)) == 0)
//		sdev->blend_bitmask |= (1<<blendmode);
//
//	/* FIXME: Handle alpha == 0 somehow? */
//	/* SVG 1.1 doesn't support adequate blendmodes/knockout etc, so just ignore it for now */
//	if (alpha == 1)
//		fz_append_printf(ctx, out, "<g");
//	else
//		fz_append_printf(ctx, out, "<g opacity=\"%g\"", alpha);
//	if (blendmode != FZ_BLEND_NORMAL)
//		fz_append_printf(ctx, out, " style=\"mix-blend-mode:%s\"", blend_names[blendmode]);
//	fz_append_printf(ctx, out, ">\n");
//}
//
//static void
//svg_dev_end_group(fz_context *ctx, fz_device *dev)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//
//	fz_append_printf(ctx, out, "</g>\n");
//}
//
//static int
//svg_dev_begin_tile(fz_context *ctx, fz_device *dev, fz_rect area, fz_rect view, float xstep, float ystep, fz_matrix ctm, int id)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out;
//	int num;
//	tile *t;
//
//	if (sdev->num_tiles == sdev->max_tiles)
//	{
//		int n = (sdev->num_tiles == 0 ? 4 : sdev->num_tiles * 2);
//
//		sdev->tiles = fz_realloc_array(ctx, sdev->tiles, n, tile);
//		sdev->max_tiles = n;
//	}
//	num = sdev->num_tiles++;
//	t = &sdev->tiles[num];
//	t->area = area;
//	t->view = view;
//	t->ctm = ctm;
//	t->pattern = sdev->id++;
//
//	xstep = fabsf(xstep);
//	ystep = fabsf(ystep);
//	if (xstep == 0 || ystep == 0) {
//		fz_warn(ctx, "Pattern cannot have x or ystep == 0.");
//		if (xstep == 0)
//			xstep = 1;
//		if (ystep == 0)
//			ystep = 1;
//	}
//
//	t->step.x = xstep;
//	t->step.y = ystep;
//
//	/* view = area of our reference tile in pattern space.
//	 * area = area to tile into in pattern space.
//	 * xstep/ystep = pattern repeat step in pattern space.
//	 * All of these need to be transformed by ctm to get to device space.
//	 * SVG only allows us to specify pattern tiles as axis aligned
//	 * rectangles, so we send these through as is, and ensure that the
//	 * correct matrix is used on the fill.
//	 */
//
//	/* The first thing we do is to capture the contents of the pattern
//	 * as a def we can reuse. */
//	out = start_def(ctx, sdev, 1);
//	fz_append_printf(ctx, out, "<g id=\"pattern_tile_%d\">\n", t->pattern);
//
//	return 0;
//}
//
//static void
//svg_dev_end_tile(fz_context *ctx, fz_device *dev)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//	int num, cp = -1;
//	tile *t;
//	fz_matrix inverse;
//	float x, y, w, h;
//
//	if (sdev->num_tiles == 0)
//		return;
//	num = --sdev->num_tiles;
//	t = &sdev->tiles[num];
//
//	fz_append_printf(ctx, out, "</g>\n");
//
//	/* In svg, the reference tile is taken from (x,y) to (x+width,y+height)
//	 * and is repeated at (x+n*width,y+m*height) for all integer n and m.
//	 * This means that width and height generally correspond to xstep and
//	 * ystep. There are exceptional cases where we have to break this
//	 * though; when xstep/ystep are smaller than the width/height of the
//	 * pattern tile, we need to render the pattern contents several times
//	 * to ensure that the pattern tile contains everything. */
//
//	fz_append_printf(ctx, out, "<pattern id=\"pattern_%d\" patternUnits=\"userSpaceOnUse\" patternContentUnits=\"userSpaceOnUse\"",
//		t->pattern);
//	fz_append_printf(ctx, out, " x=\"0\" y=\"0\" width=\"%g\" height=\"%g\">\n",
//		t->step.x, t->step.y);
//
//	if (t->view.x0 > 0 || t->step.x < t->view.x1 || t->view.y0 > 0 || t->step.y < t->view.y1)
//	{
//		cp = sdev->id++;
//		fz_append_printf(ctx, out, "<clipPath id=\"clip_%d\">\n", cp);
//		fz_append_printf(ctx, out, "<path d=\"M %g %g L %g %g L %g %g L %g %g Z\"/>\n",
//			t->view.x0, t->view.y0,
//			t->view.x1, t->view.y0,
//			t->view.x1, t->view.y1,
//			t->view.x0, t->view.y1);
//		fz_append_printf(ctx, out, "</clipPath>\n");
//		fz_append_printf(ctx, out, "<g clip-path=\"url(#clip_%d)\">\n", cp);
//	}
//
//	/* All the pattern contents will have their own ctm applied. Let's
//	 * undo the current one to allow for this */
//	inverse = fz_invert_matrix(t->ctm);
//	fz_append_printf(ctx, out, "<g");
//	svg_dev_ctm(ctx, sdev, inverse);
//	fz_append_printf(ctx, out, ">\n");
//
//	w = t->view.x1 - t->view.x0;
//	h = t->view.y1 - t->view.y0;
//
//	for (x = 0; x > -w; x -= t->step.x)
//		for (y = 0; y > -h; y -= t->step.y)
//			fz_append_printf(ctx, out, "<use x=\"%g\" y=\"%g\" xlink:href=\"#pattern_tile_%d\"/>\n", x, y, t->pattern);
//
//	fz_append_printf(ctx, out, "</g>\n");
//	if (cp != -1)
//		fz_append_printf(ctx, out, "</g>\n");
//	fz_append_printf(ctx, out, "</pattern>\n");
//	out = end_def(ctx, sdev, 1);
//
//	/* Finally, fill a rectangle with the pattern. */
//	fz_append_printf(ctx, out, "<rect");
//	svg_dev_ctm(ctx, sdev, t->ctm);
//	fz_append_printf(ctx, out, " fill=\"url(#pattern_%d)\" x=\"%g\" y=\"%g\" width=\"%g\" height=\"%g\"/>\n",
//		t->pattern, t->area.x0, t->area.y0, t->area.x1 - t->area.x0, t->area.y1 - t->area.y0);
//}
//
//static void
//svg_dev_begin_layer(fz_context *ctx, fz_device *dev, const char *name)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//
//	sdev->layers++;
//	fz_append_printf(ctx, out, "<g inkscape:groupmode=\"layer\" inkscape:label=\"%s\">\n", name ? name : "null");
//}
//
//static void
//svg_dev_end_layer(fz_context *ctx, fz_device *dev)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_buffer *out = sdev->out;
//
//	if (sdev->layers == 0)
//		return;
//
//	sdev->layers--;
//	fz_append_printf(ctx, out, "</g>\n");
//}
//
//static void
//svg_dev_close_device(fz_context *ctx, fz_device *dev)
//{
//	svg_device *sdev = (svg_device*)dev;
//	fz_output *out = sdev->real_out;
//
//	while (sdev->layers > 0)
//	{
//		fz_append_string(ctx, sdev->main, "</g>\n");
//		sdev->layers--;
//	}
//
//	if (sdev->save_id)
//		*sdev->save_id = sdev->id;
//
//	fz_write_string(ctx, out, "<svg");
//	fz_write_string(ctx, out, " xmlns=\"http://www.w3.org/2000/svg\"");
//	fz_write_string(ctx, out, " xmlns:xlink=\"http://www.w3.org/1999/xlink\"");
//	fz_write_string(ctx, out, " xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\"");
//	fz_write_string(ctx, out, " version=\"1.1\"");
//	fz_write_printf(ctx, out, " width=\"%g\" height=\"%g\" viewBox=\"0 0 %g %g\">\n",
//		sdev->page_width, sdev->page_height, sdev->page_width, sdev->page_height);
//
//	if (sdev->defs->len > 0)
//	{
//		fz_write_printf(ctx, out, "<defs>\n");
//		fz_write_buffer(ctx, out, sdev->defs);
//		fz_write_printf(ctx, out, "</defs>\n");
//	}
//
//	fz_write_buffer(ctx, out, sdev->main);
//
//	fz_write_printf(ctx, out, "</svg>\n");
//}
//
//static void
//svg_dev_drop_device(fz_context *ctx, fz_device *dev)
//{
//	svg_device *sdev = (svg_device*)dev;
//	int i;
//
//	fz_free(ctx, sdev->tiles);
//	fz_drop_buffer(ctx, sdev->defs);
//	fz_drop_buffer(ctx, sdev->main);
//	for (i = 0; i < sdev->num_fonts; i++)
//	{
//		fz_drop_font(ctx, sdev->fonts[i].font);
//		fz_free(ctx, sdev->fonts[i].sentlist);
//	}
//	fz_free(ctx, sdev->fonts);
//	for (i = 0; i < sdev->num_images; i++)
//	{
//		fz_drop_image(ctx, sdev->images[i].image);
//	}
//	fz_free(ctx, sdev->images);
//}
//
//fz_device *fz_new_svg_device_with_id(fz_context *ctx, fz_output *out, float page_width, float page_height, int text_format, int reuse_images, int *id)
//{
//	svg_device *dev = fz_new_derived_device(ctx, svg_device);
//
//	dev->super.close_device = svg_dev_close_device;
//	dev->super.drop_device = svg_dev_drop_device;
//
//	dev->super.fill_path = svg_dev_fill_path;
//	dev->super.stroke_path = svg_dev_stroke_path;
//	dev->super.clip_path = svg_dev_clip_path;
//	dev->super.clip_stroke_path = svg_dev_clip_stroke_path;
//
//	dev->super.fill_text = svg_dev_fill_text;
//	dev->super.stroke_text = svg_dev_stroke_text;
//	dev->super.clip_text = svg_dev_clip_text;
//	dev->super.clip_stroke_text = svg_dev_clip_stroke_text;
//	dev->super.ignore_text = svg_dev_ignore_text;
//
//	dev->super.fill_shade = svg_dev_fill_shade;
//	dev->super.fill_image = svg_dev_fill_image;
//	dev->super.fill_image_mask = svg_dev_fill_image_mask;
//	dev->super.clip_image_mask = svg_dev_clip_image_mask;
//
//	dev->super.pop_clip = svg_dev_pop_clip;
//
//	dev->super.begin_mask = svg_dev_begin_mask;
//	dev->super.end_mask = svg_dev_end_mask;
//	dev->super.begin_group = svg_dev_begin_group;
//	dev->super.end_group = svg_dev_end_group;
//
//	dev->super.begin_tile = svg_dev_begin_tile;
//	dev->super.end_tile = svg_dev_end_tile;
//
//	dev->super.begin_layer = svg_dev_begin_layer;
//	dev->super.end_layer = svg_dev_end_layer;
//
//	dev->real_out = out;
//	dev->in_defs = 0;
//	dev->defs = fz_new_buffer(ctx, 4096);
//	dev->main = fz_new_buffer(ctx, 4096);
//	dev->out = dev->main;
//
//	dev->save_id = id;
//	dev->id = id ? *id : 1;
//	dev->layers = 0;
//	dev->text_as_text = (text_format == FZ_SVG_TEXT_AS_TEXT);
//	dev->reuse_images = reuse_images;
//	dev->page_width = page_width;
//	dev->page_height = page_height;
//
//	return (fz_device*)dev;
//}
//
//fz_device *fz_new_svg_device(fz_context *ctx, fz_output *out, float page_width, float page_height, int text_format, int reuse_images)
//{
//	return fz_new_svg_device_with_id(ctx, out, page_width, page_height, text_format, reuse_images, NULL);
//}
